Spectroscopy and Spectral Analysis, Volume. 37, Issue 7, 2283(2017)
Research of Multi Points and Multi Spectral Calibration in Two-Dimensional Temperature Field Reconstruction Based on CCD
Based on the multi-spectral technology and the characteristics of CCD two-dimensional temperature field measurement, this paper proposes a colorful CCD two-dimensional temperature field multi-spectral true temperature online multi-point calibration system. With the analysis of multi-spectral measurement model and CCD measurement model, the approximate relation between the true temperature and the brightness of CCD is deduced during the gas combustion. With multi-spectral multi-points temperature measurement technology, the true temperature to calculate the emissivity and the true temperature of multi-points and use values of the true temperature, the corresponding points of CCD array can be calibrated. Applying the two-dimensional temperature field true temperature calibration system in CO2 laser welding flame, we not only get the variation between the emissivity and the wavelength but also two-dimensional true temperature distribution maps of flame of CO2 laser welding. Multi-spectral calibration technology has the feature of real time and flexible and is a really feasible temperature CCD online multi-points calibration and measurement method.
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ZHANG Fu-cai, SUN Xiao-gang, XING Jian. Research of Multi Points and Multi Spectral Calibration in Two-Dimensional Temperature Field Reconstruction Based on CCD[J]. Spectroscopy and Spectral Analysis, 2017, 37(7): 2283
Received: Jun. 11, 2015
Accepted: --
Published Online: Aug. 30, 2017
The Author Email: Fu-cai ZHANG (qingtengzfc@yeah.net)